Who has the right of way when two vehicles of different sizes meet on a hill?

Answer: B — The larger vehicle

In situations where two vehicles of different sizes encounter each other on a hill, the larger vehicle has the right of way. This is because the larger vehicle, typically a truck or bus, may have more difficulty maneuvering and stopping on a slope compared to a smaller vehicle, such as a car. Allowing the larger vehicle to proceed first helps to maintain traffic flow and safety. The vehicle going uphill has to yield to the vehicle going downhill, as descending vehicles might have better control and can navigate the incline more effectively. Thus, the rule is designed to facilitate smoother traffic management and prevent accidents in challenging driving conditions such as hills.